A Phonograph Record Is Dropped onto a Freely Spinning Turntable

question 9

Multiple Choice

A phonograph record is dropped onto a freely spinning turntable.Then:

• A)neither angular momentum nor mechanical energy is conserved because of the frictional forces between record and turntable
• B)the frictional force between record and turntable increases the total angular momentum
• C)the frictional force between record and turntable decreases the total angular momentum
• D)the total angular momentum remains constant
• E)the sum of the angular momentum and rotational kinetic energy remains constant

---

Definitions:

Audio

Pertaining to sound or its reproduction, including the technology and equipment used to record, transmit, and reproduce sound.

Aesthetic Appeal

The quality of being visually attractive or pleasing to the senses.

Site Layout

The arrangement of physical elements on a site, including buildings, pathways, and infrastructure, designed for optimal functionality and aesthetics.

Visual Design

The aspect of design focused on the aesthetic appeal and usability of products, interfaces, or environments through typography, color, images, and layout.